Innovate Motorsports Twin Screw Supercharger Kit for FR-S/BRZ

[ABQautoxer]

Originally Posted by Dipstik-sportech

Did I not say days ago that its just a powdercoated sprintex kit?

If the unit is right, this looks like the right calcs for it:



So it won't be a dyno queen in numbers, but naturally I'm dying to see the torque curve.

[FreshFRS]

Originally Posted by ABQautoxer

If the unit is right, this looks like the right calcs for it:



So it won't be a dyno queen in numbers, but naturally I'm dying to see the torque curve.

looks to be about right. sprintex claims 84% thermal efficiency though which i find very hard to believe. considering not even turbos are that high, Vortech claim 78% for there Centrifugals. (read that on their site somewhere.) in reality i dont think they take power consumption and friction loss into account. (emailed to confirm) if that is the case i would say its more like 65-70% efficient, inline with most other srewtype blowers. power figures could be lower than 268 and most likely that is Crank hp as well. my guess is 250 is more the number your would be looking at. ~210whp.

[ABQautoxer]

Originally Posted by FreshFRS

looks to be about right. sprintex claims 84% thermal efficiency though which i find very hard to believe. considering not even turbos are that high, Vortech claim 78% for there Centrifugals. (read that on their site somewhere.) in reality i dont think they take power consumption and friction loss into account. (emailed to confirm) if that is the case i would say its more like 65-70% efficient, inline with most other srewtype blowers. power figures could be lower than 268 and most likely that is Crank hp as well. my guess is 250 is more the number your would be looking at. ~210whp.

I think thats about right actually (on the high side). Lysholm style typically are higher than roots that are around 65%.

[Jeff86]

Originally Posted by FreshFRS

looks to be about right. sprintex claims 84% thermal efficiency though which i find very hard to believe. considering not even turbos are that high, Vortech claim 78% for there Centrifugals. (read that on their site somewhere.) in reality i dont think they take power consumption and friction loss into account. (emailed to confirm) if that is the case i would say its more like 65-70% efficient, inline with most other srewtype blowers. power figures could be lower than 268 and most likely that is Crank hp as well. my guess is 250 is more the number your would be looking at. ~210whp.

I expect a wee bit more than 210whp. Before going turbo, I made 280whp on the k20a2 with an Eaton model 62 blower. That 4 banger has similar stock power levels. This was with stock fuel pump, larger injectors (550cc) and an 11psi pulley. Also, this was with NO COOLING. I think it will become the norm for most of these SC kits to have potential past 250whp properly set up and tuned.

[ABQautoxer]

Originally Posted by Jeff86

I expect a wee bit more than 210whp. Before going turbo, I made 280whp on the k20a2 with an Eaton model 62 blower. That 4 banger has similar stock power levels. This was with stock fuel pump, larger injectors (550cc) and an 11psi pulley. Also, this was with NO COOLING. I think it will become the norm for most of these SC kits to have potential past 250whp properly set up and tuned.

Any idea of the VE of the K20 vs the FA20? I was thinking more like 225-235whp. But with that in mind, the big thing I see is turbo dynos around the same power don't really spool and make 200wtq until 4500rpm which is really late. If this can make 200wtq closer to 3000rpm, it will actually be far more usable/fun for a street car IMO, let alone autox.

[FreshFRS]

Originally Posted by Jeff86

I expect a wee bit more than 210whp. Before going turbo, I made 280whp on the k20a2 with an Eaton model 62 blower. That 4 banger has similar stock power levels. This was with stock fuel pump, larger injectors (550cc) and an 11psi pulley. Also, this was with NO COOLING. I think it will become the norm for most of these SC kits to have potential past 250whp properly set up and tuned.

11psi though. most likely this isn't going to run that high of boost. 6-8psi probably. though the high compression will help produce much more power from the lower boost. 250whp should be possible no doubt. but using engine calcs on the like that one on the sprintex site to to calculate crank HP not Whp. so if its producing 268 bhp thats only maybe 225whp. lysholm are not more efficient than centrifugal or turbos just saying. lsyholm says 64% http://www.lysholm.us/pdf/diagram_lys1200ax.pdf so sprintex is way off.

the only PD supercharger that hits above 70% is Eaton's TVS

[Jeff86]

Originally Posted by ABQautoxer

Any idea of the VE of the K20 vs the FA20? I was thinking more like 225-235whp. But with that in mind, the big thing I see is turbo dynos around the same power don't really spool and make 200wtq until 4500rpm which is really late. If this can make 200wtq closer to 3000rpm, it will actually be far more usable/fun for a street car IMO, let alone autox.

I'm thinkin the K flows better for sure but it has slightly lower compression. That's what makes the stock power levels so similar. All of this is pretty much educated speculation, but I figure we're going to be in the ballpark of what I was able to do on the K with a blower.

[FreshFRS]

Originally Posted by Jeff86

I'm thinkin the K flows better for sure but it has slightly lower compression. That's what makes the stock power levels so similar. All of this is pretty much educated speculation, but I figure we're going to be in the ballpark of what I was able to do on the K with a blower.

the k20 is almost on par with the Fc20 out of the s2k with higher compression it could make nearly the same power as the FC20

[ABQautoxer]

Yeah I figured the VE of any honda was going to be better than the FA20 but being a new motor but I don't fully understand much of the limits of the FA20.

[FreshFRS]

Originally Posted by ABQautoxer

Yeah I figured the VE of any honda was going to be better than the FA20 but being a new motor but I don't fully understand much of the limits of the FA20.

VE isnt all of it. come down to airflow. 12.5:1 offers great VE but the head doesn't flow like a honda design so it compromises power output.

[Jeff86]

Originally Posted by FreshFRS

11psi though. most likely this isn't going to run that high of boost. 6-8psi probably. though the high compression will help produce much more power from the lower boost. 250whp should be possible no doubt. but using engine calcs on the like that one on the sprintex site to to calculate crank HP not Whp. so if its producing 268 bhp thats only maybe 225whp. lysholm are not more efficient than centrifugal or turbos just saying. lsyholm says 64% http://www.lysholm.us/pdf/diagram_lys1200ax.pdf so sprintex is way off.

the only PD supercharger that hits above 70% is Eaton's TVS

Yeah that's true on the 11psi, but that kit shipped with a 5psi pulley lol. One of the first things people are going to do is switch pulleys out. These guys and others have a range of replacement pulleys for various SCs:
http://www.pulleyboys.com/store/home.php

One of the awesome things about seeing this kit when it was on the Bullet car was the amount of wrap the belt had around the pulley. Belt slip becomes a real problem on higher boost because you actually reduce the size of the pulley to spin the blower faster. This thing looks great for that. I do believe I remember a guy who got past 300whp on a twin screw with cooling, but I have no idea what the specs were on that SC.

[gmookher]

eating a gt3 is no small task

[Draco-REX]

Originally Posted by Dipstik-sportech

Did I not say days ago that its just a powdercoated sprintex kit?

Didn't see that. No biggie, there's a link now.

[FreshFRS]

Originally Posted by Jeff86

Yeah that's true on the 11psi, but that kit shipped with a 5psi pulley lol. One of the first things people are going to do is switch pulleys out. These guys and others have a range of replacement pulleys for various SCs:
http://www.pulleyboys.com/store/home.php

One of the awesome things about seeing this kit when it was on the Bullet car was the amount of wrap the belt had around the pulley. Belt slip becomes a real problem on higher boost because you actually reduce the size of the pulley to spin the blower faster. This thing looks great for that. I do believe I remember a guy who got past 300whp on a twin screw with cooling, but I have no idea what the specs were on that SC.

11psi may be too high for our motor, definitely without cooling. pump gas and 11psi might be possible with a really good intercooler. the lower compression allows for more boost.